Note on Walkthru: Fifteen minutes is, fundamentally, a timed puzzle. However, it's also
a time travel puzzle and some of the timings are set by the player during the game.
This means that while the walkthru below will get you through the game if followed exactly,
deviation from the given solution may result in shifting timings, and hence change the solution, 
and thus you may get to experience paradox paralysis first hand.

Note on Note: However, that being said, fiddling about with the machine, or examining things
takes no time.

Walkthru for Fifteen Minutes

First You
credits / read book / read chapter 4 / look / score / x second watch / x third watch / x fourth watch / 
x fifth watch / x machine / read sheet / read instructions / score / consult instructions about switches /
 drop ruined / x sixth watch / consult instructions about toggle / consult instructions about array / 
consult instructions about handle / consult instructions about go button / wait until 2:25 PM / 
x seventh watch / set black to oscillate / set red to negatron / 
set green to string / set array to 0001 / set silver to backward / set minute to 13 / hold handle  / 
press button

Second You
score / x periodic / read chapter 3 / x periodic / score / wait until 2:23 PM / set black to oscillate / 
set red to ambivalent / set green to string / set array to 0010 / set silver to backward / 
set minute to 10 / hold handle / press button

Third You
score / read chapter 1 / score / wait until 2:21 PM / set black to harmonic / set red to negatron / 
set green to quantum / set array to 0011 / set silver to backward / set minute to 5 / hold handle / 
press button

Sixth You
score / x rack / read chapter 2 / x rack / wait until 2:24 PM / set black to phase / 
set red to positron / set green to quantum / set array to 0100 / set silver to backward / 
set minute to 26 / hold handle / press button

Fifth You
score / release handle / s / s / x photo / read message / x eighth watch / open middle drawer / 
get paper / n / n / open compartment  / enter compartment / wait until 2:11 PM / close compartment / 
wait / wait / open compartment / out / give paper to fourth you / wait / set black to harmonic / 
set red to negatron / set green to inflate / set array to 0101 / set silver to backward / 
set minute to 3 / hold handle / press button

Fourth You
score / wait until 2:18 pm / x unspoilt / read question 1 / consult book about time travel / 
answer question 1 / d  / read question 2 / x periodic / consult book about uup / answer question 2 / 
a / read question 3 / consult book about hildebrand / consult book about woolpak / 
consult book about island of instability / answer question 3 / d / read question 4 / x cupboard / 
x bottles / x bromine / answer question 4 / b / read question 5 / x rack / x box  / x label / 
x rope / x disk / read inscription / answer question 5 / e / wait until 2:24 PM / 
set black to harmonic / set red to ambivalent / set green to quantum / set array to 0110 / 
set silver to backward / set minute to 2 / hold handle / i / press button

Seventh You
score / x unspoilt / wait / give third pen to sixth you / wait / wait / wait / take ruined test paper/ 
give second to mctavish / score / release handle / s / s / i / n / n / wait  until 2:37 pm / 
set array to 0111 / set grey to particle / set black to oscillate / set red to positron / 
set green to inflate / set minute to 42 / set silver to backward / hold handle / x watch / 
press go

Eighth You
score / release handle / s / s / wait / wait / unlock middle with brass key / n